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The MAX12553 is a 3.3V, 14-bit, 65Msps analog-to-digital
converter (ADC) featuring a fully differential wideband
track-and-hold (T/H) input amplifier, driving a low-noise
internal quantizer. The analog input stage accepts singleended
or differential signals. The MAX12553 is optimized
for low-power, small size, and high dynamic performance.
Excellent dynamic performance is maintained
from baseband to input frequencies of 175MHz and
beyond, making the MAX12553 ideal for intermediate-frequency
(IF) sampling applications.
Powered from a single 3.15V to 3.60V supply, the
MAX12553 consumes only 363mW while delivering a
typical signal-to-noise (SNR) performance of 71dB at
an input frequency of 175MHz. In addition to low operating
power, the MAX12553 features a 150µW powerdown
mode to conserve power during idle periods.
A flexible reference structure allows the MAX12553 to use
the internal 2.048V bandgap reference or accept an
externally applied reference. The reference structure
allows the full-scale analog input range to be adjusted
from ±0.35V to ±1.10V. The MAX12553 provides a common-
mode reference to simplify design and reduce external
component count in differential analog input circuits.
The MAX12553 supports both a single-ended and differential
input clock drive. Wide variations in the clock
duty cycle are compensated with the ADC's internal
duty-cycle equalizer (DCE).
ADC conversion results are available through a 14-bit,
parallel, CMOS-compatible output bus. The digital output
format is pin selectable to be either two's complement
or Gray code. A data-valid indicator eliminates
external components that are normally required for reliable
digital interfacing. A separate digital power input
accepts a wide 1.7V to 3.6V supply, allowing the
MAX12553 to interface with various logic levels.
The MAX12553 is available in a 6mm x 6mm x 0.8mm,
40-pin thin QFN package with exposed paddle (EP),
and is specified for the extended industrial (-40°C to
+85°C) temperature range.
See a parametric table of the complete family of pin-compatible, 12-/14-bit high-speed ADCs.
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